Roll src/third_party/skia/ 943e77368..19391ac4d (1 commit)

https://skia.googlesource.com/skia.git/+log/943e77368b89..19391ac4d393

$ git log 943e77368..19391ac4d --date=short --no-merges --format='%ad %ae %s'
2017-08-02 skia-deps-roller Roll skia/third_party/externals/angle2/ 5788d24bb..44183ccea (1 commit)

Created with:
  roll-dep src/third_party/skia


Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, see:
http://www.chromium.org/developers/tree-sheriffs/sheriff-details-chromium#TOC-Failures-due-to-DEPS-rolls


CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel;master.tryserver.chromium.android:android_optional_gpu_tests_rel
TBR=liyuqian@chromium.org

Change-Id: I30adc8c1e2bf7e3ae4af746312c3d4a73a6f6592
Reviewed-on: https://chromium-review.googlesource.com/597052Reviewed-by: Skia Deps Roller <skia-deps-roller@chromium.org>
Commit-Queue: Skia Deps Roller <skia-deps-roller@chromium.org>
Cr-Commit-Position: refs/heads/master@{#491268}

DEPS

@@ -40,7 +40,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and whatever else without interference from each other.
-  'skia_revision': '943e77368b8933e8443ee643ec36f4e006de485b',
+  'skia_revision': '19391ac4d393874797e1d34970fecf0f0182bf98',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.